Because it's wet in the winter, and hot, dry and windy in the summer. Everywhere with this weather pattern sees frequent wildfires. California used to have mo

Because it's wet in the winter, and hot, dry and windy in the summer. Everywhere with this weather pattern sees frequent wildfires. California used to have more acres burned annually a hundred years ago, but the amount of land burned has decreased since then, as a result of suppression efforts. This may be increasing the severity of fires, as there's more fuel to burn.